摘要
利用改进的单因子水质标识指数法评价漓江水质得到主要影响因子为溶解氧、氨氮,溶解氧含量基本为Ⅰ或Ⅱ类呈现以年为周期变化;氨氮含量由Ⅱ降成Ⅰ类但后呈上升走势。2018年1至4月溶解氧的指数预测值为1.31、1.36、1.76、1.96,均为Ⅰ类但含量变少,说明漓江自净能力变弱。2018年1至4月氨氮的指数预测值为2.020 5、2.252 67、2.531 3、2.859 52,均为Ⅱ类且含量增加,说明将产生水富营养化。这些水质评价与预测结果对有效开展预防治理漓江水质污染工作具有重要指导意义。
The water quality of Lijiang River was evaluated by the improved single-factor water identification index method.The results show that influence factors are dissolved oxygen and ammonia nitrogen.And the content of dissolved oxygen was basically of Class I or II,presenting a periodic change of one year. The content of ammonia nitrogen decreased from Class II to I but then increased.The predicted values of dissolved oxygen from January to April in 2018 were 1. 31,1. 36,1. 76,1. 96,which were all of Class I.The deceased content indicated that the self-purification capacity of Lijiang River became weaker.While the predicted values of ammonia nitrogen from January to April in 2018 were 2. 020 5,2. 252 67,2. 531 3,2. 859 52,which were all of Class Ⅱ.The increased content indicated that water eutrophication would appear.The results of water quality evaluation and prediction have important guiding significance for effective prevention and treatment of water pollution in Lijiang River
出处
《钦州学院学报》
2018年第5期27-32,共6页
Journal of Qinzhou University
基金
广西高等教育本科教学改革工程项目:基于数学实验的独立学院数学应用型人才培养模式的研究与实践(2017JGA376)
关键词
单因子水质标识指数
水质评价
预测模型
the single factor water quality index
water quality evaluation
prediction model
